Lethbridge investigates oil spill discovered in river

The City of Lethbridge is investigating the source of a yellow, oily substance that was found in the Oldman River but is reassuring the public that the city's drinking water is safe. Authorities first discovered the substance, that entered the Oldman River through the storm water system, on Tuesday. Crews have already contained the spill and are actively removing the material from the water. According to preliminary tests, the substance appears to be cooking oil but there is no information on wh